I multiplied 9 x 8 and I got 72, and if I remember correctly your supposed to multiply to get the area.
Hope this helps :>
Answer 2
Answer : 124ft to the nearest whole number.
Explanation: the formula to find the lateral surface area of a cone is pi times the radius times the slant height. The slant height can be found by rooting the radius squared plus the height squared.
So, 4^2 plus 9^2 rooted multiplied by pi and by the radius, which gives you an answer of 123.7644 which is 124 to the nearest whole number.